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Enhanced solubilisation of the residual fraction of municipal solid waste.

Cirne, Dores LU ; Agbor, V B and Björnsson, Lovisa LU (2008) In Water Science and Technology 57(7). p.995-1000
Abstract
The Swedish ordinance banning the landfilling of organic material after 2005 has led to rapid developments towards waste incineration, while biological alternatives have been less studied. In this study, biological alternatives for enhanced methane production from residual municipal waste (the remaining waste fraction after source separation) are investigated. The strategies investigated were recirculation of leachate, recirculation of leachate with aeration, flooding of the solid bed, and enzyme addition after initial leaching in an anaerobic, batch, two-stage digestion process with recirculation of digested leachate. The degree of solubilisation of organic compounds achieved was higher for initial digestion in a two-stage anaerobic... (More)
The Swedish ordinance banning the landfilling of organic material after 2005 has led to rapid developments towards waste incineration, while biological alternatives have been less studied. In this study, biological alternatives for enhanced methane production from residual municipal waste (the remaining waste fraction after source separation) are investigated. The strategies investigated were recirculation of leachate, recirculation of leachate with aeration, flooding of the solid bed, and enzyme addition after initial leaching in an anaerobic, batch, two-stage digestion process with recirculation of digested leachate. The degree of solubilisation of organic compounds achieved was higher for initial digestion in a two-stage anaerobic digestion system followed by the addition of cellulolytic enzymes than in the other strategies investigated. The overall net solubilisation achieved was 0.48 g COD/g VS(added) corresponding to an increase of 34%. In addition, the digestion time was considerably reduced using this strategy. For the other strategies investigated the solubilisation yields obtained were similar, 0.31 g COD/g VS(added). (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
biogas, enzymatic hydrolysis, grey waste, landfill directive, residual waste
in
Water Science and Technology
volume
57
issue
7
pages
995 - 1000
publisher
IWA Publishing
external identifiers
  • wos:000255437900005
  • pmid:18441424
  • scopus:43949124478
ISSN
0273-1223
DOI
10.2166/wst.2008.075
language
English
LU publication?
yes
id
ab8b56d3-82d2-4f79-9271-beb901ad6607 (old id 1154730)
date added to LUP
2008-10-03 12:47:55
date last changed
2017-01-01 06:32:39
@article{ab8b56d3-82d2-4f79-9271-beb901ad6607,
  abstract     = {The Swedish ordinance banning the landfilling of organic material after 2005 has led to rapid developments towards waste incineration, while biological alternatives have been less studied. In this study, biological alternatives for enhanced methane production from residual municipal waste (the remaining waste fraction after source separation) are investigated. The strategies investigated were recirculation of leachate, recirculation of leachate with aeration, flooding of the solid bed, and enzyme addition after initial leaching in an anaerobic, batch, two-stage digestion process with recirculation of digested leachate. The degree of solubilisation of organic compounds achieved was higher for initial digestion in a two-stage anaerobic digestion system followed by the addition of cellulolytic enzymes than in the other strategies investigated. The overall net solubilisation achieved was 0.48 g COD/g VS(added) corresponding to an increase of 34%. In addition, the digestion time was considerably reduced using this strategy. For the other strategies investigated the solubilisation yields obtained were similar, 0.31 g COD/g VS(added).},
  author       = {Cirne, Dores and Agbor, V B and Björnsson, Lovisa},
  issn         = {0273-1223},
  keyword      = {biogas,enzymatic hydrolysis,grey waste,landfill directive,residual waste},
  language     = {eng},
  number       = {7},
  pages        = {995--1000},
  publisher    = {IWA Publishing},
  series       = {Water Science and Technology},
  title        = {Enhanced solubilisation of the residual fraction of municipal solid waste.},
  url          = {http://dx.doi.org/10.2166/wst.2008.075},
  volume       = {57},
  year         = {2008},
}